| // Test for #56254, we previously allowed the last example on the 2018 |
| // edition. Make sure that we now emit a warning in that case and an error for |
| // everyone else. |
| |
| //ignore-compare-mode-nll |
| //ignore-compare-mode-polonius |
| |
| //revisions: migrate2015 migrate2018 nll2015 nll2018 |
| |
| //[migrate2018] edition:2018 |
| //[nll2018] edition:2018 |
| |
| #![cfg_attr(any(nll2015, nll2018), feature(nll))] |
| |
| fn double_conflicts() { |
| let mut v = vec![0, 1, 2]; |
| let shared = &v; |
| |
| v.extend(shared); |
| //[migrate2015]~^ ERROR cannot borrow `v` as mutable |
| //[nll2015]~^^ ERROR cannot borrow `v` as mutable |
| //[migrate2018]~^^^ ERROR cannot borrow `v` as mutable |
| //[nll2018]~^^^^ ERROR cannot borrow `v` as mutable |
| } |
| |
| fn activation_conflict() { |
| let mut v = vec![0, 1, 2]; |
| |
| v.extend(&v); |
| //[migrate2015]~^ ERROR cannot borrow `v` as mutable |
| //[nll2015]~^^ ERROR cannot borrow `v` as mutable |
| //[migrate2018]~^^^ ERROR cannot borrow `v` as mutable |
| //[nll2018]~^^^^ ERROR cannot borrow `v` as mutable |
| } |
| |
| fn reservation_conflict() { |
| let mut v = vec![0, 1, 2]; |
| let shared = &v; |
| |
| v.push(shared.len()); |
| //[nll2015]~^ ERROR cannot borrow `v` as mutable |
| //[nll2018]~^^ ERROR cannot borrow `v` as mutable |
| //[migrate2015]~^^^ WARNING cannot borrow `v` as mutable |
| //[migrate2015]~| WARNING may become a hard error in the future |
| |
| //[migrate2018]~^^^^^^ WARNING cannot borrow `v` as mutable |
| //[migrate2018]~| WARNING may become a hard error in the future |
| } |
| |
| fn main() {} |